WO2008106945A2 - Batterie - Google Patents

Batterie Download PDF

Info

Publication number
WO2008106945A2
WO2008106945A2 PCT/DE2008/000372 DE2008000372W WO2008106945A2 WO 2008106945 A2 WO2008106945 A2 WO 2008106945A2 DE 2008000372 W DE2008000372 W DE 2008000372W WO 2008106945 A2 WO2008106945 A2 WO 2008106945A2
Authority
WO
WIPO (PCT)
Prior art keywords
connector
welding
battery
contact element
battery according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2008/000372
Other languages
German (de)
English (en)
Other versions
WO2008106945A3 (fr
Inventor
Peter Streuer
Ingo Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clarios Germany GmbH and Co KG
Original Assignee
VB Autobatterie GmbH and Co KGaA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by VB Autobatterie GmbH and Co KGaA filed Critical VB Autobatterie GmbH and Co KGaA
Priority to EP08734346.3A priority Critical patent/EP2132808B1/fr
Priority to BRPI0808426-2A priority patent/BRPI0808426B1/pt
Priority to CN2008800140423A priority patent/CN101730951B/zh
Priority to PL08734346T priority patent/PL2132808T3/pl
Priority to US12/529,931 priority patent/US8431268B2/en
Priority to ES08734346T priority patent/ES2424168T3/es
Publication of WO2008106945A2 publication Critical patent/WO2008106945A2/fr
Anticipated expiration legal-status Critical
Publication of WO2008106945A3 publication Critical patent/WO2008106945A3/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
    • H01M50/529—Intercell connections through partitions, e.g. in a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • H01M50/541—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges for lead-acid accumulators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the invention relates to a battery having at least one battery cell connecting element, which (a) has a cuboid basic connector for connecting to at least one plate, in particular with a Polplattensatz, at a bottom of the connector and (b) a welding tab, which with a connector is electrically conductively connected, (c) wherein in the installed position of the battery, the connector extends substantially horizontally and the welding strap is substantially vertical, and (d) wherein the connector has a bottom opposite the underside and (e) at least one of the Bottom adjacent longitudinal side has, at which the welding tab is connected to the connector.
  • Such a battery is known for example from DE 103 23 529 B3 or DE 24 47 639.
  • Such batteries in the form of lead-acid batteries are used, for example, as a starter battery in an automobile.
  • a battery consists of a plurality of galvanic cells, which are connected in series and separated from each other by an electrically insulating partition.
  • Each of the galvanic cells comprises a positive and a negative plate set, each of which is composed of several pole plates.
  • a battery cell connecting element electrically and mechanically interconnects the pole plates of a plate set, and additionally serves to electrically contact the plate set of one galvanic cell via another battery cell connection element with another plate set of another galvanic cell through the dividing wall.
  • a connecting element for connecting cells to accumulators is known from EP 1 691 431 A1.
  • the battery connecting elements are aligned relative to each other and relative to a recess in the partition wall. Subsequently, the welding flaps of two battery cell connecting elements arranged on both sides of the dividing wall are welded together and thus electrically connected to one another.
  • the connector In lead-acid batteries, the connector is usually made entirely of lead, which has a relatively low electrical conductivity for a metal.
  • Lead-acid batteries generally only have voltages between 6 volts and 48 volts. In modern motor vehicles such as commercial vehicles, however, high power levels of up to several kilowatts are required, so that large currents flow through the battery cell connection elements under load. With such currents, undesirable heating occurs due to the internal resistance of the battery, which is disadvantageous. The internal resistance of the battery also adversely limits the maximum power that can be delivered by the battery.
  • the invention has for its object to provide a battery with reduced internal resistance.
  • the invention solves the problem by a generic battery in which the welding strap is electrically connected to the connector via at least one contact element arranged laterally on the welding strap and leading onto the surface of the connector.
  • a battery having such a battery cell connection element that an electric current which flows from the pole plates via the battery cell connection element experiences a lower electrical resistance than if the battery cell connection element were produced with the same amount of material without the contact element.
  • the contact element makes this available for the electrical conduction of the current Standing material of the battery cell connection element optimally used for the flow of current, so that a reduced internal resistance of the battery can be achieved. This reduces the unwanted heating of the battery during operation and allows a higher power output of the battery.
  • the invention alternatively enables the saving of material for the production of the battery cell connecting element, for example of lead.
  • a cuboidal basic shape means that it is possible, but not necessary, for the connector to be rectangular in the strict mathematical sense. Rather, it is possible for the connector to deviate from the cuboidal shape, for example by having more than six surfaces, two opposite sides not parallel to each other, or contiguous surfaces at a different angle than a right angle. Such modifications are known in the art.
  • the battery is a lead-acid battery, in particular a commercial vehicle lead-acid battery.
  • Utility vehicle lead-acid batteries differ, for example, from passenger car or motorcycle lead-acid batteries in that the welding strap is arranged centrally on the longitudinal side of the connector.
  • the weld tab has two contact elements located laterally on both sides of the weld tab, leading to the surface of the connector, and electrically connecting the weld tab to the connector.
  • the contact elements are constructed, for example, mirror-symmetrical to each other, so that the battery cell connecting element is also constructed mirror-symmetrically to a mirror plane.
  • the contact element has a cross-section which increases with decreasing distance from the top side of the connector. It is also advantageous that the battery cell connection element can be removed so easily from a mold.
  • the contact element Since an electric current originating from a pole plate, which is connected to the connector at an outer end of the connector, has to overcome a particularly high electrical resistance, it is provided in a preferred embodiment that the contact element has a cross-section which increases with increasing Distance from the welding tab increases. In this way, the electrical resistance is reduced, the current must overcome by a laterally pole plate.
  • the contact member has a connector side transition portion where it merges into the connector, that the connector side transition portion has a lateral portion, and the lateral portion has a lateral radius of curvature ranging from 3 mm to 10 mm. It has been shown that in this way a particularly low internal resistance of the battery is possible.
  • the adjective "lateral" refers to the battery cell connecting element and means facing away from the welding lug.
  • the contact element advantageously has a medial section which has a medial radius of curvature lying between 1 mm and 3 mm.
  • the contact element in a weld-flange-side transition region in which the contact element merges into the welding tab, it has a radius of curvature between 0.25 mm and 2 mm.
  • the battery cell connecting element is preferably formed in one piece, in particular it is cast from lead.
  • a particularly low internal resistance for the battery cell connection element results when a contact element cross-section of the contact element projected on the top side has a side line that extends at an angle of 30 ° to 60 ° to the longitudinal axis of the connector. It is advantageous if the contact element cross-section is substantially triangular, wherein a further side of the contact element cross-section extends substantially parallel to the longitudinal side of the connector. The angle between the two long sides of the contact element cross-section, which has its vertex within the welding tab, is then also 30 ° to 60 °.
  • the contact element cross section where the contact element merges into the connector, has a contact element cross-sectional area which is smaller than a horizontal cross section of the welding tab at the same height.
  • the cross section of the welding tab is greater than that of the contact element.
  • the size of the cross section is understood to be the cross-sectional area. It is particularly favorable if the contact element cross section is smaller than half the cross section of the welding tab at the same horizontal height.
  • the mounting of the battery cell connection element is particularly facilitated if the contact element on the connector side is arranged substantially completely beyond a horizontal plane which runs through the longitudinal side at which the welding lug is connected to the connector.
  • FIG. 2 shows a plan view of the batteries according to FIG. 1,
  • FIGS. 3a, 3b, 3c show cross-sectional views of battery cell connection elements according to the prior art
  • FIG. 4 shows a battery cell connection element for a battery according to the invention
  • FIGS. 5a, 5b, 5c, 5d show cross-sectional views of a battery cell connecting element of a battery according to the invention.
  • FIG. 1 shows a battery 10 in a cross-sectional view comprising galvanic cells 12.1 to 12.6, of which the galvanic cells 12.1, 12.2 and 12.3 are shown in FIG.
  • the galvanic cells 12.1, 12.2, 12.3 each comprise a positive plate set 14.1, 14.2, 14.3 and a negative plate set 16.1, 16.2 and 16.3.
  • the galvanic cells 12.1 to 12.3 are spatially and electrically separated from one another by partitions 18.1, 18.2 and arranged in a housing.
  • Each of the plate sets 14.1 to 14.3 or 16.1 to 16.3 comprises a plurality of pole plates which are mechanically and electrically connected to a battery cell connection element 20.1, 20.2, 20.3 or 20.4.
  • a battery cell connection element 20.1, 20.2, 20.3 or 20.4 In each case two battery cell connecting elements 20.1 and 20.2 or 20.3 and 20.4 are connected by a not shown opening in the respective partition 18.1 or 18.2 miteinan- electrically and mechanically connected, so that the galvanic cells 12.1 to 12.3 are connected in series.
  • FIG. 2 shows, in addition to the galvanic cells 12.1 to 12.3, three further galvanic cells 12.4, 12.5 and 12.6, which are electrically and mechanically connected via two battery cell connection elements 22.1, 22.2 to the galvanic cells 12.1 to 12.3 and connected in series.
  • an electric current is applied to a positive terminal 24 and a negative terminal 26, or an electric current is tapped therefrom, the electric current flows through all the galvanic cells 12.1. to 12.6 and thereby passes the battery cell connection elements 20.1 to 20.8 and 22.1, 22.2. Since the electric current has to pass through a plurality of battery cell connecting elements, even small improvements in the electrical resistance exhibited by these battery cell connecting elements result in a relevant reduction in the overall internal resistance of the battery 10.
  • Figure 3a shows a battery cell connector 20 having a connector 28 and a welding tab 30.
  • the connector 28 has a substantially cuboidal basic shape with a lower side 32, an upper side 34, a longitudinal side 36 (FIG. 3b) facing the welding tab, a longitudinal side 38 facing away from the welding tab, a first lateral longitudinal side 40 and a second lateral longitudinal side 42.
  • the welding tab 30 is arranged on the welding lug side longitudinal side 36 of the connector 28.
  • FIG. 4 shows a perspective view of the battery cell connection element 20 for a battery according to the invention, in which identical objects are provided with the same reference numerals.
  • the battery cell connection element 20 comprises a first contact element 44.1 and a second contact element 44.2.
  • Both contact elements 44.1, 44.2 are connected in one piece both with the welding strap 30 and with the connector 28 and taper towards the welding strap 30 in a wedge shape.
  • Both contact elements 44.1, 44.2 have a horizontal H-related horizontal cross-sections, which have a decreasing distance to the top 34 increasing surface. In other words, the contact elements 44.1, 44.2 taper upwards.
  • top direction like the other orientations in the present description, always refers to a mounting position of the battery cell connector 20 in a battery 10 as shown in Figures 1 and 2.
  • these directions are not intended to be limiting, but merely serve the clarification of a particularly suitable arrangement.
  • the contact elements 44.1, 44.2 are also designed such that cuts with a vertical plane V running along the welding-lug-side longitudinal side 36 have a surface which decreases with increasing distance from the welding-lug-side longitudinal side 36.
  • the contact elements 44.1, 44.2 are also designed such that a section having a vertical plane W (FIG. 5c) running perpendicular to the welding-plate-side longitudinal side 36 has an increasing cross-section with increasing distance from the welding strap 30.
  • the contact elements 44.1, 442. thus have a prism-like basic structure whose base is substantially triangular, as indicated in Figure 5c by the triangle D.
  • the opening angle ⁇ between the two largest legs is between 30 ° and 60 °, wherein one of the legs extends parallel to the welding plate side longitudinal side 36.
  • FIG. 4 shows a connector-side transition region 46 which comprises a lateral section 48 and a medial section 50.
  • the transition region has a lateral radius of curvature of 3 mm to 10 mm and in the medial section 50 a medial radius of curvature is 2 mm.
  • a radius of curvature of also 2 mm is present.
  • the battery cell connector 20 is manufactured by pouring lead into a suitably shaped mold.
  • the resulting battery cell Easy to remove the connecting element, the welding flap 30, the connector 28 and the contact elements 44.1, 44.2 taper upwards and form with their respective surfaces relative to a corresponding vertical plane at an angle of 2 ° to 7 °.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne une batterie comportant au moins un élément de connexion de cellules de batterie (20) présentant (a) un connecteur (28) de forme de base parallélépipédique, destiné à être connecté à au moins une plaque polaire sur un côté inférieur (32) du connecteur (28), et (b) une attache de soudage (30) connectée de façon électroconductrice au connecteur (28); (c) en position montée de la batterie (10), le connecteur (28) est disposé de façon essentiellement horizontale et l'attache de soudage (30) est disposée de façon essentiellement verticale; et (d) le connecteur (28) présente un côté supérieur (34) faisant face au côté inférieur (32) et (e) au moins un côté longitudinal (36) adjacent au côté inférieur (32), l'attache de soudage (30) étant connectée au connecteur (28) sur le côté longitudinal. Selon l'invention, l'attache de soudage (30) est connectée électriquement au connecteur (28) au moyen d'un élément de contact (44.1, 44.2) disposé latéralement sur l'attache de soudage (30) et menant à la surface du connecteur (28).
PCT/DE2008/000372 2007-03-07 2008-03-03 Batterie Ceased WO2008106945A2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP08734346.3A EP2132808B1 (fr) 2007-03-07 2008-03-03 Batterie
BRPI0808426-2A BRPI0808426B1 (pt) 2007-03-07 2008-03-03 bateria com ao menos um conector de célua de bateria
CN2008800140423A CN101730951B (zh) 2007-03-07 2008-03-03 电池
PL08734346T PL2132808T3 (pl) 2007-03-07 2008-03-03 Bateria
US12/529,931 US8431268B2 (en) 2007-03-07 2008-03-03 Battery and battery cell connecting element
ES08734346T ES2424168T3 (es) 2007-03-07 2008-03-03 Batería

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007011390.2 2007-03-07
DE102007011390A DE102007011390B4 (de) 2007-03-07 2007-03-07 Batterie

Publications (2)

Publication Number Publication Date
WO2008106945A2 true WO2008106945A2 (fr) 2008-09-12
WO2008106945A3 WO2008106945A3 (fr) 2010-01-14

Family

ID=39687991

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000372 Ceased WO2008106945A2 (fr) 2007-03-07 2008-03-03 Batterie

Country Status (8)

Country Link
US (1) US8431268B2 (fr)
EP (1) EP2132808B1 (fr)
CN (1) CN101730951B (fr)
BR (1) BRPI0808426B1 (fr)
DE (1) DE102007011390B4 (fr)
ES (1) ES2424168T3 (fr)
PL (1) PL2132808T3 (fr)
WO (1) WO2008106945A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4462245B2 (ja) * 2006-07-19 2010-05-12 トヨタ自動車株式会社 ２次電池、積層２次電池および組電池
DE102009014116B3 (de) * 2009-03-24 2010-09-23 Vb Autobatterie Gmbh & Co. Kgaa Batteriezellenverbinder und Batterie
DE102011120237B4 (de) * 2011-12-05 2021-09-02 Audi Ag Verbindungselement zum elektrischen Verbinden von parallel geschalteten Batteriezellen, Batterie und Verfahren zum Herstellen eines Verbindungselements
DE102021125014A1 (de) 2021-09-28 2023-03-30 Bayerische Motoren Werke Aktiengesellschaft Batteriezellengehäuse für eine Batteriezelle eines elektrischen Energiespeichers, Batteriezelle, elektrischer Energiespeicher sowie Verfahren

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2447639C3 (de) * 1974-10-05 1978-08-24 Accumulatorenwerk Hoppecke Carl Zoellner & Sohn, 5000 Koeln Zellenverbindung eines Bleiakkumulators
JPH0294254A (ja) * 1988-09-29 1990-04-05 Aisin Seiki Co Ltd 蓄電池
US5308719A (en) * 1992-09-21 1994-05-03 Globe-Union Inc. Lead acid batteries containing center lug plates and high performance cast-on straps
JP3168834B2 (ja) * 1994-07-13 2001-05-21 新神戸電機株式会社 鉛蓄電池の群溶接方法
JPH08130030A (ja) * 1994-10-27 1996-05-21 Furukawa Battery Co Ltd:The 鉛蓄電池
US6225006B1 (en) * 1999-07-15 2001-05-01 Gnb Technologies, Inc. Family of lead-acid batteries using a standardized container and having voltage that can be preselected as necessary
DE10323529B3 (de) * 2003-05-24 2004-08-26 Varta Automotive Systems Gmbh Zellenverbindereinheit und Verfahren zur elektrischen Verbindung von benachbarten Zellen
EP1691431A1 (fr) * 2005-02-14 2006-08-16 SAT Akkumulatoren Technik AG Jonction pour connecter les batteries d'un accumuleateur

Also Published As

Publication number Publication date
BRPI0808426A2 (pt) 2014-07-22
DE102007011390A1 (de) 2008-09-18
CN101730951B (zh) 2013-02-13
EP2132808A2 (fr) 2009-12-16
DE102007011390B4 (de) 2011-06-09
ES2424168T3 (es) 2013-09-27
PL2132808T3 (pl) 2014-01-31
BRPI0808426B1 (pt) 2019-11-05
US8431268B2 (en) 2013-04-30
US20100183921A1 (en) 2010-07-22
EP2132808B1 (fr) 2013-04-24
CN101730951A (zh) 2010-06-09
WO2008106945A3 (fr) 2010-01-14

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